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<p>[QUOTE=&quot;desertgem, post: 1290925, member: 15199&quot;]The 2000 is just a thin copper shell over a zinc core. In the dryer as the shape of the edge/rim is altered to the thickness of a nickel, the zinc can be exposed, giving a silvery color. I agree with the dryer theory.</p><p><br /></p><p>One way to tell ( but it would damage the coin) is to add a drop of acetic acid ( vinegar ) to the silvery edge. If it is zinc, bubbling occurs ( hydrogen gas is released). If it is really nickel, nothing will happen. </p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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